Rosuvastatin suppresses the oxidative response in the venous limb of an arteriovenous fistula and enhances the fistula blood flow in diabetic rats

Shih Yuan Fang, Jun Neng Roan, Yu Lin, Chih Hsin Hsu, Shih Wei Chang, Chein Chi Huang, Yu Chuan Tsai, Chen Fuh Lam

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Objective: The blood flow in the arteriovenous (AV) fistula is significantly reduced in diabetic patients. Statins are known to mediate pleiotropic effects in the vascular endothelium and attenuate inflammatory responses. This study tested the vascular protective effect of rosuvastatin in an experimental model of AV fistula. Methods: One week after the induction of diabetes mellitus (DM) in rats, a fistula was created in the abdominal aorta and inferior vena cava. Rats received placebo or rosuvastatin (15 mg/kg/day) in chow for 2 weeks. The blood flow in the venous segments of the fistula was measured. The expression of proinflammatory genes and the generation of superoxide in the venous fistula were examined. Results: The blood flow and luminal diameter of the AV fistula was significantly enhanced in animals treated with rosuvastatin. Rosuvastatin attenuated the expression of inducible nitric oxide synthase, NADPH oxidase, and monocyte chemotactic protein-1 in the fistula. The levels of superoxide anions and proinflammatory cytokines were also suppressed in rosuvastatin-treated animals. Neointimal formation in the AV fistula was not affected following treatment with rosuvastatin. Conclusions: We demonstrated that rosuvastatin improves luminal dilatation and blood flow in the AV fistula of subjects with DM. These vascular protective effects of rosuvastatin are most likely mediated by the attenuation of proinflammatory activities in the remodeled vasculature.

Original languageEnglish
Pages (from-to)81-89
Number of pages9
JournalJournal of Vascular Research
Volume51
Issue number2
DOIs
Publication statusPublished - 2014 Jun

All Science Journal Classification (ASJC) codes

  • Physiology
  • Cardiology and Cardiovascular Medicine

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